Tunable 1,3-Lithium Shift of Propargylic/Allenylic Lithiums Formed by Conjugate Addition of 4-Aryl-3-butyn-1-enes with Organolithiums and the Subsequent Transmetalation/Pd(0)-Catalyzed Coupling Reaction with Aryl Halides
作者:Shengming Ma、Qiwen He、Xin Jin
DOI:10.1055/s-2005-862349
日期:——
A protocol was established to control the 1,3-lithiumshift in propargylic/allenylic species formed by the conjugate addition of 4-aryl-3-butyn-1-enes with organolithiums. Subsequenttransmetalation and Pd(0)-catalyzed cross-coupling with arylhalides afforded 1,1-diarylallenes and 1,3-diarylallenes, respectively, the structural diversities of which are determined by the easily availability of both